21230222212032 has 28 divisors (see below), whose sum is σ = 56171629603176. Its totient is φ = 7076740737280.

The previous prime is 21230222211997. The next prime is 21230222212063. The reversal of 21230222212032 is 23021222203212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21230222211993 and 21230222212011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55287036819 + ... + 55287037202.

Almost surely, 2^{21230222212032} is an apocalyptic number.

It is an amenable number.

21230222212032 is an abundant number, since it is smaller than the sum of its proper divisors (34941407391144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230222212032 is a wasteful number, since it uses less digits than its factorization.

21230222212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110574074036 (or 110574074026 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21230222212032 its reverse (23021222203212), we get a palindrome (44251444415244).

The spelling of 21230222212032 in words is "twenty-one trillion, two hundred thirty billion, two hundred twenty-two million, two hundred twelve thousand, thirty-two".